Electrochemical properties and thermal stability of epoxy coatings electrodeposited on aluminium and modified aluminium surfaces
Elektrohemijske karakteristike i termička stabilnost epoksidnih kataforetskih prevlaka na aluminijumu i modifikovanim površinama aluminijuma
Article (Published version)
Metadata
Show full item recordAbstract
The corrosion behavior of epoxy coatings electrodeposited on aluminum, as well as on electrochemically and chemically modified aluminum were investigated during exposure to 3 % NaCl. Electrochemical impedance spectroscopy (EIS) and thermogravimetric analysis (TGA) were used for the determination of the protective properties of epoxy coatings on aluminum, anodized aluminum, phosphatized and chromatized-phosphatized aluminum. The protective properties of epoxy coatings on anodized and chromatized-phosphatized aluminum are significantly improved with respect to the same epoxy coatings on aluminum and phosphatized aluminum: higher values of the pore resistance and charge-transfer resistance, lower values of the coating capacitance, double-layer capacitance and relative permittivity (from EIS) smaller amount of absorbed water inside the coating (From TGA). On the other hand, the lower values of the ipdt temperature indicate a lower thermal stability of the epoxy coatings on anodized and chr...omatized-phosphatized aluminum.
Proučavano je koroziono ponašanje epoksidnih prevlaka dobijenih kataforetskim taloženjem na aluminijumu i elektrohemijski i hemijski modifikovanom aluminijumu tokom delovanja 3 % rastvora NaCl. Za određivanje zaštitnih osobina epoksidnih prevlaka na aluminijumu, anodiziranom aluminijumu, fosfatiranom i hromatno-fosfatiranom aluminijumu korišćene su metode spektroskopije elektrohemijske impedancije i termogravimetrijske analize. Zaštitne osobine epoksidnih prevlaka na anodiziranom i hromatno-fosfatiranom aluminijumu su značajno poboljšane u odnosu na iste epoksidne prevlake na aluminijumu i fosfatiranom aluminijumu: veće vrednosti otpornosti u porama prevlake i otpornosti prenosa naelektrisanja na graničnoj površini metal-elektrolit i manje vrednosti kapacitivnost prevlake, kapacitivnosti električnog dvojnog sloja i relativne permitivnosti prevlake (impedansna merenja) i manja količina absorbovane vode u prevlaci (termogravimetrijska analiza). S druge strane, manje vrednosti ipdt temper...ature ukazuju na manju termičku stabilnost epoksidnih prevlaka na anodiziranom i hromatno-fosfatiranom aluminijumu.
Keywords:
electrodeposition / epoxy coatings / aluminium / anodized aluminium / phosphatized and chromatized- phosphatized aluminium / corrosion / EIS / EISSource:
Journal of the Serbian Chemical Society, 2001, 66, 11-12, 871-880Publisher:
- Serbian Chemical Society, Belgrade
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Mišković-Stanković, Vesna AU - Lazarević, Zorica Ž. AU - Kačarević-Popović, Zorica M. PY - 2001 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/355 AB - The corrosion behavior of epoxy coatings electrodeposited on aluminum, as well as on electrochemically and chemically modified aluminum were investigated during exposure to 3 % NaCl. Electrochemical impedance spectroscopy (EIS) and thermogravimetric analysis (TGA) were used for the determination of the protective properties of epoxy coatings on aluminum, anodized aluminum, phosphatized and chromatized-phosphatized aluminum. The protective properties of epoxy coatings on anodized and chromatized-phosphatized aluminum are significantly improved with respect to the same epoxy coatings on aluminum and phosphatized aluminum: higher values of the pore resistance and charge-transfer resistance, lower values of the coating capacitance, double-layer capacitance and relative permittivity (from EIS) smaller amount of absorbed water inside the coating (From TGA). On the other hand, the lower values of the ipdt temperature indicate a lower thermal stability of the epoxy coatings on anodized and chromatized-phosphatized aluminum. AB - Proučavano je koroziono ponašanje epoksidnih prevlaka dobijenih kataforetskim taloženjem na aluminijumu i elektrohemijski i hemijski modifikovanom aluminijumu tokom delovanja 3 % rastvora NaCl. Za određivanje zaštitnih osobina epoksidnih prevlaka na aluminijumu, anodiziranom aluminijumu, fosfatiranom i hromatno-fosfatiranom aluminijumu korišćene su metode spektroskopije elektrohemijske impedancije i termogravimetrijske analize. Zaštitne osobine epoksidnih prevlaka na anodiziranom i hromatno-fosfatiranom aluminijumu su značajno poboljšane u odnosu na iste epoksidne prevlake na aluminijumu i fosfatiranom aluminijumu: veće vrednosti otpornosti u porama prevlake i otpornosti prenosa naelektrisanja na graničnoj površini metal-elektrolit i manje vrednosti kapacitivnost prevlake, kapacitivnosti električnog dvojnog sloja i relativne permitivnosti prevlake (impedansna merenja) i manja količina absorbovane vode u prevlaci (termogravimetrijska analiza). S druge strane, manje vrednosti ipdt temperature ukazuju na manju termičku stabilnost epoksidnih prevlaka na anodiziranom i hromatno-fosfatiranom aluminijumu. PB - Serbian Chemical Society, Belgrade T2 - Journal of the Serbian Chemical Society T1 - Electrochemical properties and thermal stability of epoxy coatings electrodeposited on aluminium and modified aluminium surfaces T1 - Elektrohemijske karakteristike i termička stabilnost epoksidnih kataforetskih prevlaka na aluminijumu i modifikovanim površinama aluminijuma EP - 880 IS - 11-12 SP - 871 VL - 66 UR - https://hdl.handle.net/21.15107/rcub_vinar_2486 ER -
@article{ author = "Mišković-Stanković, Vesna and Lazarević, Zorica Ž. and Kačarević-Popović, Zorica M.", year = "2001", abstract = "The corrosion behavior of epoxy coatings electrodeposited on aluminum, as well as on electrochemically and chemically modified aluminum were investigated during exposure to 3 % NaCl. Electrochemical impedance spectroscopy (EIS) and thermogravimetric analysis (TGA) were used for the determination of the protective properties of epoxy coatings on aluminum, anodized aluminum, phosphatized and chromatized-phosphatized aluminum. The protective properties of epoxy coatings on anodized and chromatized-phosphatized aluminum are significantly improved with respect to the same epoxy coatings on aluminum and phosphatized aluminum: higher values of the pore resistance and charge-transfer resistance, lower values of the coating capacitance, double-layer capacitance and relative permittivity (from EIS) smaller amount of absorbed water inside the coating (From TGA). On the other hand, the lower values of the ipdt temperature indicate a lower thermal stability of the epoxy coatings on anodized and chromatized-phosphatized aluminum., Proučavano je koroziono ponašanje epoksidnih prevlaka dobijenih kataforetskim taloženjem na aluminijumu i elektrohemijski i hemijski modifikovanom aluminijumu tokom delovanja 3 % rastvora NaCl. Za određivanje zaštitnih osobina epoksidnih prevlaka na aluminijumu, anodiziranom aluminijumu, fosfatiranom i hromatno-fosfatiranom aluminijumu korišćene su metode spektroskopije elektrohemijske impedancije i termogravimetrijske analize. Zaštitne osobine epoksidnih prevlaka na anodiziranom i hromatno-fosfatiranom aluminijumu su značajno poboljšane u odnosu na iste epoksidne prevlake na aluminijumu i fosfatiranom aluminijumu: veće vrednosti otpornosti u porama prevlake i otpornosti prenosa naelektrisanja na graničnoj površini metal-elektrolit i manje vrednosti kapacitivnost prevlake, kapacitivnosti električnog dvojnog sloja i relativne permitivnosti prevlake (impedansna merenja) i manja količina absorbovane vode u prevlaci (termogravimetrijska analiza). S druge strane, manje vrednosti ipdt temperature ukazuju na manju termičku stabilnost epoksidnih prevlaka na anodiziranom i hromatno-fosfatiranom aluminijumu.", publisher = "Serbian Chemical Society, Belgrade", journal = "Journal of the Serbian Chemical Society", title = "Electrochemical properties and thermal stability of epoxy coatings electrodeposited on aluminium and modified aluminium surfaces, Elektrohemijske karakteristike i termička stabilnost epoksidnih kataforetskih prevlaka na aluminijumu i modifikovanim površinama aluminijuma", pages = "880-871", number = "11-12", volume = "66", url = "https://hdl.handle.net/21.15107/rcub_vinar_2486" }
Mišković-Stanković, V., Lazarević, Z. Ž.,& Kačarević-Popović, Z. M.. (2001). Electrochemical properties and thermal stability of epoxy coatings electrodeposited on aluminium and modified aluminium surfaces. in Journal of the Serbian Chemical Society Serbian Chemical Society, Belgrade., 66(11-12), 871-880. https://hdl.handle.net/21.15107/rcub_vinar_2486
Mišković-Stanković V, Lazarević ZŽ, Kačarević-Popović ZM. Electrochemical properties and thermal stability of epoxy coatings electrodeposited on aluminium and modified aluminium surfaces. in Journal of the Serbian Chemical Society. 2001;66(11-12):871-880. https://hdl.handle.net/21.15107/rcub_vinar_2486 .
Mišković-Stanković, Vesna, Lazarević, Zorica Ž., Kačarević-Popović, Zorica M., "Electrochemical properties and thermal stability of epoxy coatings electrodeposited on aluminium and modified aluminium surfaces" in Journal of the Serbian Chemical Society, 66, no. 11-12 (2001):871-880, https://hdl.handle.net/21.15107/rcub_vinar_2486 .
Related items
Showing items related by title, author, creator and subject.
-
Corrosion behaviour of epoxy coatings on modified aluminium surfaces
Mišković-Stanković, Vesna; Lazarević, Zorica Ž.; Kačarević-Popović, Zorica M.; Dražić, Dragutin M. (Bulletin of Electrochemistry, 2002) -
Fabrication and behaviour of Al-Si/SiC composite in cavitation conditions
Ćosić, Milena; Dojčinović, Marina; Acimović-Pavlović, Zagorka (Taylor & Francis Ltd, Abingdon, 2014) -
Determination of the protective properties of electrodeposited organic epoxy coatings on aluminium and modified aluminium surfaces
Lazarević, Zorica Ž.; Mišković-Stanković, Vesna; Kačarević-Popović, Zorica M.; Dražić, Dragutin M. (Pergamon-Elsevier Science Ltd, Oxford, 2005)